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Abstract
Using Airborne LIDAR DEMs to Delineate NYC Reservoir Boundaries According to Spillway Elevation ContoursTrack: Water Resources
Author(s): Terry E. Spies
It is important to New York City's Bureau of Water Supply to map reservoir extents accurately because they are more strictly regulated than other water bodies. Reservoir buffer lands have a higher priority for implementation of watershed protection programs. Reservoir extent is defined as being equal to the dam spillway elevation contour line. Until now, the spillway elevation had never been spatially delineated throughout the reservoirs or their tributaries due to lack of detailed elevation data. Airborne LIDAR surveys are used to provide
high-resolution (4m horizontal) elevation data, which is further processed to accurately delineate spillway elevation contours, hence reservoir extent.
Terry E. Spies
New York City Department of Environmental Protection
71 Smith Ave.
Kingston, NY 12401
USA
Phone: 845-340-7527
Fax: 845-340-7514
E-mail: spiest@water.dep.nyc.ny.us